Journal
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Volume 78, Issue -, Pages 271-283Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2019.06.002
Keywords
Betaine-functionalized magnetite nanoparticles; Core-shell adsorbent for Mo and Re
Funding
- PTID project, Facultad de Ciencias Quimicas y Farmaceuticas, Universidad de Chile
- Fondecyt Project [1140331]
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The aim of this work is to produce a superparamagnetic core-shell adsorbent material composed of magnetite nanoparticles coated with a silica layer and functionalized with betaine for applications associated with the recovery of molybdenum and rhenium anions from highly acidic aqueous solutions. The resulting nanoparticles with a quaternary amine surface were predominantly spherical with average diameters of 14.3 +/- 1.7 nm. Adsorption experiments at pH values of 1-2 confirmed that it was possible to uptake molybdate and perrhenate species using this adsorbent nanomaterial, achieving maximum loading capacities of 15 mg/g(MNP) for Mo and 19 mg/g(MNP) for Re. (C) 2019 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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